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(ModeL) 5 Sheets-Sheet 1.

D. SHORTSLEEVE.

MACHINE FOR SAWING STONE.

N0. 283,929. Patented Aug. 28, 1883.

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(ModeL) 5 Sheets-Sheet 2.

D. SHORTSLEEVE.

MACHINE FOR SAWING STONE.

No. 283,929. Patented Aug. 28, 1883.

5 SheetsSheet 3.

(Model) D. SHORTSLEEVE.

MACHINE FOR SAWING STONE.

No. 283,929. Patented Aug. 28, 1883.

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MACHINE FOR SAWING STONE.

Patented Aug. 28, 1883.

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D. SHORTSLEEVE. MAUHINE FOR SAWING STONE.

No. 283,929. Patented Aug. 28, 1883.

DAVID SHORTSLEEVE, OF RUTLAND,

ATENT FFiQE.

VERMONT, ASSIGNOR OF ONE-HALF TO EDMUND A. MORSE, OF SAME PLACE.

MACHINE FOR SAWING STONE.

SPECIFICATION forming part of Letters Patent No. 283,929, dated August28, 1883.

Application filed Feliruaryfl, 18:3. tModel.)

To all whom it may concern:

Be it known that I, DAVID SHORTSLEEVE, a citizen of the United States,residing in the city and county of Rutland, and State of Vermont, haveinvented a new and useful Machine for Sawing Stone, of which thefollowing is a specification.

My invention consists of certain novel constructions, combinations, andarrangements of IO parts in machines for sawing stone, and the nature ofthe same will be fully understood from the following specification,claims, and accompanying drawings.

In the accompanying drawings, Figure l is a side elevation of the entiremachine. Fig.

2 is a top view of the same. Fig. 3 is a vertical central longitudinalsection of the same. Fig. 4 is a horizontal section of the same, takenjust above the saw-gang frame, exposing to View only the main frame,crank-shaft frame, gang-saw frame, and elevating-screws. Fig. 5 is avertical cross-section in the line of the elevating-screws of thegang-saw frame at the end of the main frame, and Fig. 6 is a dia gram ofthe elevating-gear.

In the figures of the drawings, A represents the main frame, consistingof oblong sills a, a number of upright guide-posts, a a", twolongitudinal top beams, a, and asuitable number of transversebrace-beams, a, the whole carefully fitted and firmly secured together,and serving for both the crank-shaft frame and the sawgang frame.Between the guideposts a the crank-shaft frame 1, is supported by meansof vertical screws (1, and between the posts a the saw-frame O issupported by means of the upright screws d. The threads of all thesescrews (Z are of the same pitch, and the screws are all simultaneouslyand uniformly 4o operated by means of an elevating-gear, D, as will beseen. The upper portions of the screws (Z are secured in positionbybcarings (1, which -are fastened to the posts a a in a suitablemanner. Above the said bearings d bevel- 4 5 gear wheels (1 are providedon the screws d, and similar bevel-gear wheels (l 011 horizontaltransverse shafts (1 gear into wheels 011 the screws. The shafts d aresuitably supported by the said bearings d, and are each provided with abevel-gear wheel, (1 outside of the main frame, where they are operatedby similar gear-wheels, d 011 a longitudinal shaft, (1, suitably hung tothe main frame. One of the shafts (1 extends beyond the side of the mainframe, and is there provided with 5 5 a toothed wheel, (1. An auxiliarytransverse shaft, 0, suitably hung to the main frame, and provided witha loose and a tight pulley, e 6*, transfers motion to the wheel d bymeans of a reverse gear. This reverse gear consists of a wheel, 0,fastened to the shaft 6, and gearing into a wheel, 0', at either side ofit. The wheels 6* run on studs 6 which. are fastened to a plate, 0,swinging around the shaft 6. A wheel, 6 on a stud, c of. the plate 6"gears into one of the wheels 0,- and the two extreme wheels 6 c are soarranged that they are either out of range of the wheel (i or one or theother may be set into gear with the said wheel (1 by swinging the platee either in one direction or the other. This latter operation of theplate c" is effected by means of an arm, e extending from the plate 6,and a rod, 6", pivoted to the said arm and having three (:3) holes,

c whereby it may be held in three different positions upon a rigid pin,6, on the main frame, to wit: The pin 6 being in the middle hole c thewheel (1 is not operated, and the whole elevatinggear is at rest. 7 Thepin e be ing in the lower hole 6 the crank and saw frames are feddownward, and vice versa when the pin 0 is in the upper hole a. Thetight pulley 0 receives its motion by means of a belt, f, from a pulley,f, on. the main. shaft F. The shaft F is provided with another pulley, 85 f which, by means of a belt, f, revolves a pulley, f", suitably hungto the main frame. This pulley f is provided with a slotted crank,

f and adjustable wrist-pin f, and a connecting-rod, f which latterconnects the crank f 0 with a slotted arm, by means of an adjust ablewrist-pin, g. The arm 9 swings around a stud, on an arm, g, which ispivoted at g" to the main frame. The arm 9 is provided with a pawl, g,which operates a ratchet- 5 wheel, 9, on the stud g", and another pawl,9

on the arm g" prevents back motion of the i'atchetwheel. Theratchet-wheel g is pro vided with a pinion, 9", matching the wheel d. Tothe end of the arm a shipping-rod, g", is pivoted, which is providedwith two holes, 9 for the entrance of a rigid pin, g,

suitably fastened to the main frame. lVhen the rod rests with the upperhole 9" on the pin the pinion g is not in gear with the wheel (1 andwhen the rod g rests with the lower hole g upon the pin g, the pinion 9gears with the wheel (1 and thus operatesthe feed or elevating device ofthe crank-frame and saw frame. The ratchet-wheel'g is ordinarily usedfor the operation of the feed, while the reverse gear 6 e e is chieflyused for adjusting the elevation of the cranleframe and saw-frame beforeand after sawing the marble block, or in case of an accident to thesaws.

The crankframe B is of rectangular shape, and is provided withtransverse bars I), having threaded holes, to which the elevating-screwscl are fitted. The inner corners of the posts a are metal-plated, as atb, and the frame B is provided with diagonally-slotted bearingplates bbearing against the plates 1), whereby an adjustable vertical bearing ofgreat durability is procured. The end surfaces of the posts a are. alsometal-plated at I), and the end portions of the frame B are providedwith slotted adjustable angular metal bearings b and adjustingdovetail-sided wedges b whereby the bearings b are kept in position.

A crank-shaft, H, is suitably mounted upon the frame B, the crank itoccupying a central position, and a pulley, h, being provided 011 oneand a fly-wheel, if, 011 the other side of it. Pitmen on each side of anumber of gangs have been used in machines of some constructions inorder to gain room, while gangs with a pitman on one side only are themost commonly adopted; but with my improved con struction of the mainframe and bearings the central crank will prove to be the indstadvantageous. The pulley h of the crank-shaft -H is revolved by means ofa belt, h, and a pulley, f*, of the main shaft F. This main shaft mayeither be suitably hung to the main frame, as shown; and in this case isprovided with a main pulley, f, or one of the lineshafts of the shop maybe provided with the pulleys f f f, and thus may serve in lieu of thesaid main shaft.

Between the pulleys f and h a belt-tightener, I, is provided, whichconsists of two tightening-pulleys, t i, suitably hung to a carriage, i,having flanged whee1s'i and having an outward tension by means of aweight, i, connecting-cord c'fland pulley The carriage '6 runs on ametal-lined track, 5, suitably secured to the main frame, and is insuredagainst vertical displacement by angular guide-plates i bearing againstthe lower surfaces of the aforesaid track, as shown in Fig. 5. Thepulley 43 over whichthe cord #passes, is.hung to the end portions of thetrack 6. The carriage i is provided with a laterally-inclined rack, j,into which a pinion, j, at the end of an inclined shaft, j", gears. Theshaft 9' is suitably hung to one of the posts a, and is provided with ahand-wheel, j, and ratchet-wheel f. A pawl, 3' is hung to the post a,and prevents backward movement of the ratchet-wheel and downwardmovement of the weight 72 and it is only used when the crank-shaft is tobe stopped. For this purpose the hand-wheel is turned back until thetension of the carriage i ceases, and the belt h becomes so loose as tobe inoperative, whereupon the pawl j is moved or allowed to fall intothe teeth of the ratchet-wheel j, and thus the motion of the crank-shaftis stopped, while the main shaft continues to run.

The saw gang frame, which comprises, mainly, a rectangular saw-frame, 0,provided with suitable saws, and transverse supporting cross-bars K, towhich the said frame 0 is hung, is connected to the crank h of the shaftH by means of a pitman-rod, h, and it is caused to oscillate or swing bymeans of the crank-shaft and pitman between upright guides c, suitablyfastened to the inner side of the posts a The saw-frame O is suspendedby means of hanger-arms 7c on'the supporting verticallyslidingcross-bars K of the saw-gang frame, said bars being provided withmetallic headpieces having journals k to which the hanger-arms areattached, and nut-heads k, which are fitted upon the screws d and areoperated by them. Opposite the screws (1 vertical guides K are fastenedto the posts 0?, and the nut-heads k are provided with double flanges k,which slide upon the said guides, and

thus protect the screws d against lateral strains. The hanger-armsproper, 7c, are screwed into lower semi-bearings, 7c", and securedthereto by check-nuts I5, and these lower semi-bearings, by means ofset-screws 7c, are attached to upper semi-bearings, kl, and the bearingsk are encircled by the said semi-bearings k k J The lower parts of thehanger-arms k are provided with stirrups k, which, by means of suitablebearings, 0', support the saw-frame. The connecting-rod If is attachedto a pin, 0; in a slotted head, 0 which is suitably fastened to theslotted end bar, c, of the saw-frame, and is provided with lateralopenings 0 whereby a free passage is provided for the heads Z of thesawhooks Z. The saws are fastened in the frame 0 by hooks Z, which atone end of the saw-frame are made adjustable, as usual, by wedgekeys, orin any other suitable manner.

At the end portions of the saw-frame O ordinary adjustablebearing-plates, M, are provided, which, as usual, by means of slottedangular foot-plates m and set-screws m, are fastened to the frame 0andbear upon the guides 0, thereby, as usual, keeping the frame and sawslaterally steady. Between the posts a the saw-frame O is provided withlongitudinally-adjustable bumpers N, which consist of plates at, havingsocket-heads n, with elastic concussion-blocks of, longitudinal slots mand set-screws a, whereby said bumpers may be set nearer together orfarther apart, and thus allow the concussion-blocksn to strike the postsa with more or less force, as desired. This device of the bumpersprevents the sawframe, which is run much faster thanin ordinarymachines, from straining and injuring the wrist-pins and connecting-rodby its iner tia'at the end of each stroke; also enables the gang-frameposts to assist the crank-shaft frame posts to receive a part of theshock of the crankshaft, and also saves power.

The frame 0, which supports the stone block to be sawed, is made to bearon the guides c, and has angular bearings bearing against metalliclinings 0 on the posts a and is in this manner insured against lateraldisplacement, while it may move vertically. For the latter purpose theframe 0 is provided with nuts 6 fitting the screws (1. In order toprevent the frame 0 from moving vertically when it is required to liesteady upon the foundation part c of the main frame, the lower portions,t, of the respective screws (Z are so reduced in diameter as not toaffect the nuts 0 when turning. hen the frame 0 is to be operated by thescrews d, it is lifted up until the threads of the revolving screws haveentered the nuts 0 sufficiently to operate them properly. Before theframe 0 is elevated the saw-frame and erank-frame are raised above thetermini of the screw-threads of the corresponding screws, (Z, whichthreads are at those points reduced in thickness to the depth of screwthreads of d, as seen at d, so that the threaded ends of the bars b andthe nut-heads k sit loosely on the said reductions. In this position thetwo frames are then held by locking their bearings, the crankframe beinglocked by pressing the bearing-plates I) 1) against the posts a, and thesaw-frame being locked by forcing a set-screw, especially provided forthis purpose in each outer flange, k", against the bearings K.

From the foregoing description it will be seen that either the gang-sawframe, together i with the crank-shaft, can be fed down by theserewrods,'or the stone on the platform fed up to the gangsaw frame andcrank-shaft by the said rods, during either of which modes of operationmeans are provided whereby either the stone supporting platform or thegangsaw frame and crank can be held stationary. The construction of mymachine is such that the crank is brought inside of the main frame,instead of requiring to be placed outside of the same, which arrangementof the crank is the most advantageous in such machines. Other devicesthan screwssuch as an endless chain or rope-i nay be adopted for raisingthe block of stone.

By having the gang frame posts and crankframe posts all framed into thesame sills and top pieces, the crank-shaft frame, where there is themost strain, will. not be able to yield unless the gang-frame supportyields. In other words, these long uniting sills and top pieces insuresteadiness and firmness during the operation of the machine.

It will further be seen that the saw-gang frame and the crank-shaftframe, although moved up and down together uniformly, are

made separately from one another, and each furnished with its ownspecial guides, which can be adjusted to suit the necessities of eachframe, and that this construction admits of the saw-gang frame swingingor oscillating while both it and the crank-shaft frame are slidingeither down or upward.

It will further be seen that the bumpers, ratchet or intermittentfeeding mechanism, the reversing continuous feeding mechanism, and thetension mechanism, as shown, render the machine very convenient andexpeditiousof operation, while the main frame and guides and centralcrank and pitman give great steadiness and durability to the operatingparts.

WVhat I claim as my invention, and desire to secure by Letters Patent,is

1. In a stone-sawing machine, a saw-gang frame applied within the mainframe, and swinging back and forth while sliding up and down, incombination with a crank-shaft and pitman-connection applied to a framewhich .slidcs up and down, and with the means where by the two framesare moved up and down,

-- can be reversed in their movement, and accelerated or slackened intheir movement when necessary, substantially as and for the purposedescribed.

2. A stone-sawing machine comprising, in combination, the belttightening and slackening or stopping mechanism,the power-gearing, twosets of vertical screws and nuts, the sliding and swinging saw-gangframe and the sliding crank-shaft frame, and a pitman-connection betweenthe two frames, substantially as and for the purpose described.

3. The combination of the supporting main frame A, separate slidingcrank'supporting frame B, separate swinging and sliding sawgang frame 0K, crank-shaft H, and pitmanconnection h, applied to the frame 13, twosets of vertical screws and nuts for feeding down and up the crank-shaft, pitman, and their frame, and the saw-gang frame simultaneouslyand uniformly, ratchet feeding mechanism, and suitable connecting anddriving mechanism, substantially as described.

4. A stone-sawing machine comprising a main supporting-frame, A, avertically-sliding and longitudinal]y-swinging saw-gang frame, 0 K, asliding crank-shaft frame, a crank-shaft and pitman mounted on thesliding frame and connected to the saw-gang frame, two sets of screwsand nuts for feeding down and up the crank-shaft frame and saw-gangframe simul-' taneously and uniformly, the power gearing and reversingmechanism, by which the up and down movements of the crank-shaft andsawgang frames can be made continuous instead of intermittent, and saidmovements can be changed from down to up and up to down, substantiallyas described.

5. The combination of the ratchet feed mechanism for producing anintermittent downward feed, the reversing continuous feed mechanism forproducing a continuous up or ICC down feed, the power-gearing, verticalscrews and nuts, sliding and swinging saw-gang frame, slidingcrank-shaft frame, and main frame, substantially as and for the purposedescribed.

6. The. reversing-gear mechanism consist ing of the wheel e on shaft 6,wheels e and e on studs 6 e swinging plate a, andwheel d on extension ofshaft (7,, in combination with power-shaft F, suitable connecting-gearing, as e e ff, vertical screws (1, having bevel-wheels d", and workingin nuts of" bars I) and K, connecting-shafts d (1, provided withgear-wheels d -crank-shaft frame B, saw-gang frame 0, suitableconnecting mechanism between the crank-frame and saw-frame, and

suitable driving mechanism between the crankshaft and power-shaft,substantially as and for the purpose described.

frame and the saw-gang frame, of the swinging arm 9 carrying aratchet-wheel, 9, fastened to a pinion, g, and supported .by pivot g offrame A, the arm 9, carrying the pawl g, for operating the ratchet-wheelg", the connecting-rod)", attached to arm g, the wheel (1 on extensionof shaft (1, and gearing into wheel 9 vertical screws, nuts, andconnecting-gearing by which the crank-shaft frame and sawframe areoperated, and the reversing gear- Wheels 6 e e on a swinging plate, 6,and suitable devices for forming a connection'with the power-shaft,substantially as and for the purpose described.

8. The vertical screws d of the main frame, upon which the sawgangframe, crank-shaft frame, and the stone-platform are applied, providedwith the reductions d and d clamping bearing-plates b If on posts a ofthe frame, nuts for the screws d to work in, vertical guide-bearings Kof posts a of the frame, .and

. set-screw la in the outer flanges, 70*,of the nutheads 76*, wherebyeither the stone-platform may be kept stationary or be moved, or thecrank-frame and saw-gang frame may be kept stationary or be moved duringthe operation of sawing stone, substantially as described.

9. The combination, with the main frame A, vertically-sliding andlongitudinally-swinging saw-gang frame 0 K, and the vertically slidingcrank-shaft frame connected by'pitman with the saw-gang frame, of theadjustable bumpers N, applied on the saw-gang frame between posts a c ofmain frame, and consisting of angular slotted andsocketed plates n,having elastic concussion-blocks n fitted upon them, substantially asand for the purpose described.

10. The saw-gang frame consisting of the cross-bars K, provided withhead-pieces journals k semi-bearings kk screw-threaded hanger-arms 7c,and arranged to slide and swing within the main frame A, and connectedwith a crank-shaft frame, B, which slides simultaneously with it in saidframe A,

substantially as described.

vided with guides K, having guiding nutheads k with double flanges 7c,the elevating screws (1, having reductions d and the setscrews isapplied to the flanges 1a", for holding the saw-gangstationary,substantially as and for the purpose described.

12. The vertical screws (1, provided with reductions (1 upon which thecrank-shaft frame is adjusted to a stationary position, in combinationwith the sliding crank-shaft .frame and the adjustable guiding andclamping plates, by which said frame is prevented from descending whenthe stone-platform is being moved upward, substantially as described.

13. In a stone-sawing machine, the combination of a main frame, A, aseparate vertically moving and guided crank-shaft frame,

, B, a separate vertically moving and swinging

